Answer:
The probability that you would choose a green candy:
or approximately 32%.
Explanation:
The general form of probability can be calculated as the following fraction:

First, to find the total number of outcomes, you need to add all of the candies together: 42 + 45 + 20 + 32 = 139, so there are 139 total outcomes. Since there are a total of 45 green candies, the probability of choosing green from the total can be written as:

Dividing the numerator by the denominator and multiplying by 100 gives us the percentage of approximately 32%.